"We also conducted a series of tests at a local CD/DVD mastering facility. I do not currently have a detailed equipment list for this venue, but the speakers were very large and capable high-end monitors, approximately 7 feet tall, and the power amps were sufficient to drive the speakers to very high levels without audible distortion. Some of the source material for these trials was a classical production which was then in process at this establishment. Like all the others, these trials, which were done under a promise of anonymity made to those involved, produced no significant correlations on music at normal levels."
Some of the tests were done by professional sound engineers in a mastering facility. I think it would be reasonable to conclude the system was up to the job. The thing is I am not aware that anyone has done a test since that concludes any different i.e. Taking hi res and DSD recordings and putting them through a 44.1khz/16 bit "bottleneck".